The specs on the Acrelectronics website indicate that the ResQLinks+ (buoyant) model and the ResQLinks standard model are equally waterproof.

To be sure, can someone confirm that the only differences between the ResQLinks+ (buoyant) model and the standard ResQLinks model are that: the ResQLinks+ (buoyant) model is larger and about an ounce heavier than the standard model and the + model floats in water and the standard model sinks.